High performance room temperature ferroelectric barium strontium titanate ceramics by spark-plasma-sintering ultrafine nanocrystals

doi:10.1016/j.ceramint.2019.05.057

	High performance room temperature ferroelectric barium strontium titanate ceramics by spark-plasma-sintering ultrafine nanocrystals
	Zhai, Yunling 2,3; Xie, Xiong 1,3; Zhou, Rui 2,3; Li, Xu 1,3; Liu, Xinxin 2,3; Liu, Shuangyi2,3
刊名	CERAMICS INTERNATIONAL
	2019-08-15
卷号	45 期号:12 页码:15526-15531
关键词	Nanocrystals Ferroelectricity Spark plasma sintering Lead-free ceramics Dielectric properties
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2019.05.057
通讯作者	Liu, Shuangyi(liushuangyi@cigit.ac.cn)
英文摘要	High performance lead-free ferroelectric ceramics with better dielectric behaviors are highly demanded by the electronic industry. Here, room temperature ferroelectric Ba0.7Sr0.3TiO3 ceramic flakes are fabricated by spark plasma-sintering method (SPS) with the phase transition temperature being confirmed as 36 degrees C. The as-fabricated flakes are completely densified and defects-free polycrystalline ceramics with excellent dielectric and ferroelectric performances in a broad frequency range. The dielectric constants are over 3000 in broad frequency with losses lower to 0.03, which are better than those of most reported barium strontium titanate based ceramics by SPS methods. Meanwhile, the dc breakdown strength is 240 kV/cm and the energy storage density is over 1 J/cm(3) in terms of higher dielectric constant and dielectric strength of the products. The achievement of the excellent performances is resulted by synergy contributions of SPS method, homogeneous source nanocrystals, and precise controlling to the stoichiometric of the nanocrystals. The works present an effective feasible method for fabricating densified and defects-free barium titanate based ceramics with achieving room temperature ferroelectricity.
资助项目	National Natural Science Foundation of China[21875245] ; Program of Hundreds Talents of Chinese Academy of Sciences
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000474322000129
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/8296]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Liu, Shuangyi
作者单位	1.Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China 2.Univ Chinese Acad Sci, Yanqihu Campus, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Yunling,Xie, Xiong,Zhou, Rui,et al. High performance room temperature ferroelectric barium strontium titanate ceramics by spark-plasma-sintering ultrafine nanocrystals[J]. CERAMICS INTERNATIONAL,2019,45(12):15526-15531.
APA	Zhai, Yunling,Xie, Xiong,Zhou, Rui,Li, Xu,Liu, Xinxin,&Liu, Shuangyi.(2019).High performance room temperature ferroelectric barium strontium titanate ceramics by spark-plasma-sintering ultrafine nanocrystals.CERAMICS INTERNATIONAL,45(12),15526-15531.
MLA	Zhai, Yunling,et al."High performance room temperature ferroelectric barium strontium titanate ceramics by spark-plasma-sintering ultrafine nanocrystals".CERAMICS INTERNATIONAL 45.12(2019):15526-15531.